the dunkerque and other top tier french ship bug, secondary gun shell always land a few hundred of meters further than the main gun shells.
It only happen when controlling main and secondary canon at the same time. For exemple, firing at a target 10km away, main gun shell land on the ship and secondary gun shell land at 10.25km.
crew is maxed with secondary gun aiming mod unlocked (before saying it’s skill issue i play naval since the beta with hundreds of game played)
im not sure but i think the bug is caused by the different shell speed between main and secondary gun. All gun elevate at the same angle but since the shell speed differ the secondary shell land further since it’s the fastest one.